Double groove concrete jointer



FIG. 1 is a perspective view of the double groove concrete jointer of the invention.

FIG. 2 is a side view of the double groove concrete jointer.

FIG. 3 is a front view of the double groove concrete jointer.

FIG. 4 is a top view of the double groove concrete jointer; and,

FIG. 5 is a bottom view of the double groove concrete jointer.

The broken line portions of FIG. 1 are included for purposes of environment and form no part of the claimed design. 

The ornamental design of a double groove concrete jointer, as shown and described. 